package com.lanou3g.code0516;

import com.lanou3g.code0516.common.Constant;
import com.lanou3g.code0516.pojo.User;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet(name = "WelcomeServlet", urlPatterns = "/welcome")
public class WelcomeServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        HttpSession session = request.getSession();
        User user = (User) session.getAttribute(Constant.Session.USER);
        if (user == null) {
            //还没登录
            //去登录页面登录
            response.sendRedirect(request.getContextPath() + "/user/login.jsp");
        } else {
            //代表登录过了
            request.getRequestDispatcher("/WEB-INF/welcome.jsp").forward(request, response);
        }
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}